出版社：Zavod za istra?ivanje i razvoj sigurnosti d.d./Institute of safety research and development
摘要：In this day and age, small unmanned aerial vehicles are becoming more and more popular. Different types of these craft have been built over the years, with drones (quadrocopters) being the most popular. They are used mostly for commercial purposes and as a support in different hobbies, but they can also be used for illegal activities such as smuggling or transport of explosives. The use of drones in the vicinity of airports is a major problem. Drones are exceptionally difficult to detect due to their small size, their front end made of plastic, and their electric-powered engines that generate very little heat. For these reasons, conventional radars and infrared cameras are not sufficient for detection of drones. The purpose of this research is to determine the possibilities of acoustic detection of drones. The sound pressure levels of noise emitted by drones have been measured. Based on this data, the theoretical limit distance at which a drone can still be detected acoustically has been determined. A possible increase of this limit distance has been examined, if an acoustic camera is used as the acoustic detector. The outcomes of this research are expected to improve general safety due to the optimization of several different approaches to drone detection.
